02156nas a2200193   4500008004100000022001400041245009300055210006900148260009900217300001400316490000700330520139800337653001001735653002501745653001901770100002501789700002401814856012401838       2006                        eng d  a0032-386100aCrystallization and phase transformation kinetics of poly(1-butene)/MWCNT nanocomposites0 aCrystallization and phase transformation kinetics of poly1butene  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTDcAUG  a6414-64210 v473 a<p>Poly(1-butene)/MWCNT nanocomposites were prepared by simple melt processing technique. Crystallization, crystal-to-crystal phase transformation and spherulitic morphology were studied using differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD) and optical microscopy (OM). The non-isothermal crystallization exhibited higher values of Z, derived from Avrami theory and lower values of F(T) obtained from Avrami-Ozawa analysis, while the isothermal crystallization revealed a significant increase in crystallization temperatures and lower crystallization half times compared to pristine PB. The observed changes in the crystallization kinetics were ascribed to the enhanced nucleation of PB in the presence of MWCNT. The nucleating activity calculated from the non-isothermal crystallization data revealed that the MWCNTs provide an active surface for the nucleation of PB. The optical micrographs exhibited significantly smaller crystallites with disordered morphology for the nanocomposites compared to the well defined spherulitic morphology for pristine PB. The rate of phase transformation from kinetically favored tetragonal to thermodynamically stable hexagonal form was noticeably enhanced as evidenced by the reduction in the half time for phase transformation from 58 h to 25 h for PB reinforced with 7% MWCNT. (c) 2006 Elsevier Ltd. All rights reserved.</p>10aMWCNT10aPhase transformation10apoly(1-butene)1 aWanjale, Santosh, D.1 aJog, Jyoti, Prakash  uhttps://library.ncl.res.in/content/crystallization-and-phase-transformation-kinetics-poly1-butenemwcnt-nanocomposites-0